Improvement in stocks for screw-cutting dies



J. HOCHHEIMER.

STOCKS SCREW-CUTTING DIES.

Patented March 20,1877.

N-PETER8. PHDTOJJTHOGRAPNER. WASHINGTON D C 444444 r4 M r or U UNITEDSTATES PATENT OFFICE JOHN HOOHHELMER, OF HAMILTON, OHIO.

IMPROVEMENT IN STOCKS FOR SCREW-CUTTING DIES.

Specification forming part of Letters Patent No. 188,634, dated March20, 1877; application filed September 17, 1875.

To all whom it may concern:

Be it known that I, JOHN HooHnEIMER, of Hamilton, Butler county, Ohio,have invented a new and useful Improvement in Die-Stocks for (hittingScrews; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompanying drawings,and to the letters of reference marked thereon.

Figure 1 represents a side view of my new die-stock; Fig. 2, the face ofthe die-clamp, with a pair of dies inserted therein.

My present invention relates to certain improvements in the die-stocks;and consists in connecting the two branches of the stock by the use of asleeve and arm, instead of the hinge, so as to give parallel adjustmentto the dies; and in constructing the die-holder or clamp withoverlapping lips upon one jaw, which fit over the other jaw of thedie-clamp, as described herein.

In the drawings, A B denote the die-clamps or jaws connected to theirrespective side frames 0 D, through which the screw-bolt I passes toadjust the clamps with the dies S S toward or from each other. The side0 has a cylindrical arm, F. constructed at right angles thereto, andrepresented in dotted lines, as inserted in a sleeve made through thepart G of the frame D, which is provided with a square shank, H, to fitinto the socket of a bit-stock. a: .1: denote the overlapping lips ofthe clamp.

This improvement enables the die-stock to be opened and closed inparallel planes. The die-stock may be used by means of the ordinarybit-stock, by inserting the shank H in the socket of the bit-stock.

Having described my impr0vement,I claim- The sleeve G, and arm F, incombination with the jaws A B, and screw-bolt I, substantially asdescribed, for the purpose specified. Witness my hand this 10th day ofMay, A.

JOHN HOOHHEIMER. Witnesses:

H. P. K. PEoK,

JOHN M. DAVIDSON.

